MacConkey Agar: Introduction, Principle, Composition, Preparation, Procedure, Colony Morphology, Uses, and Keynotes

MacConkey Agar: Introduction, Principle, Composition, Preparation, Procedure, Colony Morphology, Uses, and Keynotes

Introduction of MacConkey Agar MacConkey agar (MAC) uses for the culture of gram-negative bacteria and therefore Enterobacteriaceae belonging bacteria grow well on this medium and coliforms also enjoy this medium. MAC is a modification of Neutral Red Bile Salt Agar developed by MacConkey. It was one of the …

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Klebsiella pneumoniae: Introduction, Identification Features, Keynotes, and Klebsiella pneumoniae Footages

Klebsiella pneumoniae biochemical tests in TSI, SIM, Citrate and Urea agar

Introduction The genus Klebsiella is from the surname of  German-Swiss microbiologist Edwin Klebs (1834–1913). Klebsiella is a member of the family, Enterobacteriaceae and it is a Gram-negative, oxidase-negative, fimbriated, non -motile, non-sporing rod-shaped bacterium with a prominent polysaccharide-based capsule and having a size of 0.5 to 0.8 …

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Lactose Fermenter (LF) and Non-Lactose Fermenter (NLF) Gram-Negative Bacteria: Introduction, List of LF and NLF Bacteria, and Keynotes

LF and NLF Colonies of Klebsiella and Pseudomonas on MacConkey medium

Introduction of LF and NLF Gram-Negative Bacteria on MacConkey Medium MacConkey agar/ medium is recommended for use as a selective, differential, and indicator growth medium for the isolation of gram-negative bacilli including coliform organisms and enteric pathogens, on the basis of lactose fermentation. Peptones (meat …

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